import turtle  # 吧turtle库导进来


def drawpython(rad, angle, len, neckrad):
    for i in range(len):
        turtle.circle(rad, angle)
        turtle.circle(-rad, angle)
    turtle.circle(rad, angle / 2)
    turtle.fd(rad)  # foward直行
    turtle.circle(neckrad + 1, 180)
    turtle.fd(rad * 2 / 3)


def main():
    turtle.setup(1300, 800, 0, 0)
    pythonsize = 30
    turtle.pensize(pythonsize)
    turtle.pencolor("red")
    turtle.seth(-40)
    drawpython(40, 80, 5, pythonsize / 2)
if __name__ == '__main__':
    main()
